參數(shù)資料
型號(hào)： MC68HC705SR3PE
廠商： Freescale Semiconductor
文件頁(yè)數(shù)： 9/96頁(yè)
文件大?。?/td> 0K
描述： IC MCU 3.75K 2.1MHZ OTP 40-DIP
標(biāo)準(zhǔn)包裝： 9
系列： HC05
核心處理器： HC05
芯體尺寸： 8-位
速度： 4MHz
外圍設(shè)備： LED，POR
輸入/輸出數(shù)： 32
程序存儲(chǔ)器容量： 3.75KB（3.75K x 8）
程序存儲(chǔ)器類型： OTP
RAM 容量： 192 x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 4x8b
振蕩器型： 內(nèi)部
工作溫度： 0°C ~ 70°C
封裝/外殼： 40-DIP（0.600"，15.24mm）
包裝： 管件
MC68HC05SR3
Freescale
1-1
GENERAL DESCRIPTION
1
GENERAL DESCRIPTION
The MC68HC05SR3 HCMOS microcontroller is a member of the M68HC05 family of low-cost
single-chip microcontrollers. This 8-bit microcontroller unit (MCU) contains on-chip oscillator,
CPU, RAM, ROM, I/O, Timer, and Analog-to-Digital Converter. The MC68HC05SR3 is pin
compatible with the MC6805R3 and is provided as a low power upgrade path for MC6805R3
applications. The low power advantage of CMOS is combined with the addition of I/O and port
modifications which help eliminate external components in cost sensitive applications.
The MC68HC705SR3 is an EPROM version of the MC68HC05SR3; it is available in windowed
and OTP packages. All references to the MC68HC05SR3 apply equally to the MC68HC705SR3,
unless otherwise stated. References specific to the MC68HC705SR3 are italicized in the text and
also, for quick reference, they are summarized in Appendix A.
1.1
Features
Fully static chip design featuring the industry standard 8-bit M68HC05 core
Pin compatible with the MC6805R3
Power saving STOP, WAIT, and SLOW modes
3840 bytes of user ROM with security feature in MC68HC05SR3
3840 bytes of EPROM with security bit in MC68HC705SR3
192 bytes of RAM (64 bytes for stack)
32 bidirectional I/O lines
Keyboard interrupts
8-bit count-down timer with programmable 7-bit prescaler
On-chip crystal oscillator, with built-in capacitor for RC option
Second software programmable external interrupt line (IRQ2)
Direct LED drive capability on all ports
Programmable 20K
pull-up resistors integrated into I/O ports
TPG
15
05SR3.Book Page 1 Thursday, August 4, 2005 1:08 PM
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